greatest nation on earth. >> the great debate five days away. why romney has to win and why obama can't afford to lose. i'll talk to my political a-team. also, bibi and the bomb. >> a red line should be drawn right here. >> after dropping this on the u.n. yesterday, he talks to obama and romney today. what israel's line in the sand would mean for all of us. plus, have you seen chelsea lately? >> nobody knows what the hell they're getting into when they're running for president. >> one of my favorites guests is back. >> i'm single, yes. >> if men are watching this -- >> yeah, i'm available. you know, just call me maybe. >> funny, feisty as ever, with a new look for her talk show. this is "piers morgan tonight." >>> good evening. the big story, the great debate. in just five days the event that could change the race for the white house permanently. the clock is ticking and the candidates know it. they meet face-to-face on wednesday. this weekend, both will be locked behind closed doors in practice sparring sessions. romney has listed senator rob portman to prep him while obama is working

doors in practice sparring sessions. romney has listed senator rob portman to prep him while obama is working with senator john kerry. latest polls covered with that 47% remark hurting romney. in the battleground state of pennsylvania today. >> -- make sure america leads in our homes, in our economy and in our military. i need something from you. that's my commitment to you. i need you to go out and find somebody who voted for barack obama and get him to vote for me. >> he's down but not out. can he turn it around with an october surprise? let's welcome stephanie cutter. it's going reasonably well for you guys. it's been a good couple weeks, really since the conventions. you've got a bit of momentum but i guess you're not taking this too complacently. >> no, absolutely not, piers. you know, debates can be a pivotal moment in campaigns. i remember eight years ago when john kerry was getting ready to debate george bush, we were eight points down. coming out of that first debate we were tied with george bush. so there is an opportunity for mitt romney if he takes advantage of it next wed